At a Glance
- Tasks: Protect people and information in a vital national defence programme.
- Company: Cavendish Nuclear, part of Babcock International Group, focused on security and safety.
- Benefits: Attractive salary, generous holiday, pension scheme, and health support.
- Other info: Flexible working options and excellent career development opportunities.
- Why this job: Join a team making a real impact on national security and energy.
- Qualifications: Experience in admin roles and strong Excel skills required.
The predicted salary is between 30000 - 40000 € per year.
Location: Warrington, Cheshire + Hybrid Working Arrangement
Compensation: Attractive Salary + Benefits
Role Type: Full time / Permanent
Safeguarding People, Programmes and National Security – Your Career Starts Here
At Cavendish Nuclear, we’re working to create a safe and secure world, together. If you join us, you can play your part as a Junior Security Administrator at our Warrington, Cheshire site.
The role
As a Junior Security Administrator, you play a vital role in protecting people, information and critical infrastructure within a major national defence programme. Supporting the Head of Security and wider security team, you help ensure security processes operate smoothly, compliantly and effectively across a highly regulated environment. The role is 37 hours per week, Monday to Friday, and is based at our Warrington site. Hybrid working patterns are available, and some travel to other Cavendish Nuclear, Babcock and customer sites will be expected.
Day‑to‑day, You’ll Be Required To:
- Providing personnel security advice in line with current HMG and company security policy
- Managing security clearance processes, including upgrades, transfers and access requests
- Maintaining accurate security records, spreadsheets and compliance data using Microsoft Excel
- Coordinating starters, leavers, site access and visitor processes across secure facilities
- Supporting audits, training compliance and general administration for the Security team
Essential Experience Of The Junior Security Administrator:
- Experience in an administrative, coordination or support role within a structured environment
- Strong working knowledge of Microsoft Excel and Microsoft Office applications
- Excellent written and verbal communication skills
- High attention to detail with the ability to manage data accurately
- Ability to work independently while contributing positively to a team environment
Qualifications For The Junior Security Administrator:
- Membership with the Defence and Security Industry Association (DISA) or the Security Institute is highly desirable
- We value difference and don’t have a fixed idea when it comes to background or education, provided you can show the required level of experience and willingness to learn then we would like to hear from you
Security Clearance
The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK.
What We Offer:
- Generous holiday allowance
- Matched contribution pension scheme, with life assurance
- Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
- Employee share scheme
- Employee shopping savings portal
- Payment of Professional Fees
- Reservists in the armed forces receive 10‑days special paid leave
- Holiday Trading is a benefit that allows UK Cavendish employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement.
- ‘Be Kind Day’ enables employees to take one working day's paid leave a year (or equivalent hours) to undertake volunteering work with their chosen organisation or registered charity
- Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.
Cavendish
We’re Cavendish Nuclear — a team of c5,000 specialists and a core part of Babcock International Group. Here, you’ll be part of something bigger. Across clean energy, defence, and civil decommissioning, your work will contribute to projects that are critical to energy security and national protection. Together, we’re shaping a future that lasts — not only through the impact we make, but through meaningful careers that respect your work‑life balance. Join us and discover how far we can go, together.
We are a disability confident committed employer. If you have a disability or need any reasonable adjustments during the application and selection stages, please email with the subject header ‘Reasonable adjustments requirement’. We’re committed to building an inclusive culture where everyone’s free to thrive. We are happy to talk about flexible working – please ask about alternative patterns of work at interview.
Closing date: 19/05/2026
Locations
Junior Security Administrator in Cheshire, Warrington employer: Cavendish Nuclear
Cavendish Nuclear is an exceptional employer, offering a supportive work culture that prioritises employee wellbeing and professional growth. With a generous benefits package, including a matched pension scheme, flexible working arrangements, and opportunities for volunteering, employees are empowered to thrive both personally and professionally. Located in Warrington, Cheshire, you will be part of a dedicated team contributing to vital national security projects, ensuring your work has a meaningful impact on society.
StudySmarter Expert Advice🤫
We think this is how you could land Junior Security Administrator in Cheshire, Warrington
✨Tip Number 1
Network like a pro! Reach out to current or former employees at Cavendish Nuclear on LinkedIn. A friendly chat can give you insider info and might just help you get your foot in the door.
✨Tip Number 2
Prepare for the interview by brushing up on your knowledge of security processes and compliance. Show us you’re not just a fit for the role, but that you’re genuinely interested in safeguarding people and information.
✨Tip Number 3
Practice your communication skills! As a Junior Security Administrator, you'll need to convey complex information clearly. Try mock interviews with friends or family to build your confidence.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining our team at Cavendish Nuclear.
We think you need these skills to ace Junior Security Administrator in Cheshire, Warrington
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter for the Junior Security Administrator role. Highlight your experience in administrative roles and your strong knowledge of Microsoft Excel, as these are key for us.
Show Off Your Communication Skills:Since excellent written and verbal communication skills are essential, don’t shy away from showcasing these in your application. Use clear and concise language to demonstrate your ability to convey information effectively.
Attention to Detail is Key:We’re looking for someone with a high attention to detail. Make sure your application is free from typos and errors, and consider including examples of how you’ve managed data accurately in previous roles.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity at Cavendish Nuclear!
How to prepare for a job interview at Cavendish Nuclear
✨Know Your Security Basics
Before the interview, brush up on the key security policies and procedures relevant to the role. Familiarise yourself with HMG guidelines and Cavendish Nuclear's specific practices. This will show your commitment and understanding of the industry.
✨Excel at Excel
Since strong knowledge of Microsoft Excel is essential, practice using it to manage data effectively. Be ready to discuss how you've used Excel in past roles, perhaps for maintaining records or coordinating processes. Highlight any specific functions or features you’re comfortable with.
✨Communicate Clearly
Excellent written and verbal communication skills are a must. Prepare to articulate your thoughts clearly during the interview. You might even want to practice explaining complex security concepts in simple terms, as this demonstrates your ability to communicate effectively with various stakeholders.
✨Show Your Team Spirit
While the role requires independent work, being a team player is crucial. Think of examples where you've contributed positively to a team environment. Share stories that highlight your collaboration skills and how you support your colleagues in achieving common goals.
